Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual foi o número de presença no Stadion com um placar de 2-0.
 ###Tabelas: CREATE TABLE by_prison_inmates_and_incarceration_rate (by_prison_inmates_and_incarceration_rate_id AUTO_INCREMENT PRIMARY KEY, Region VARCHAR, Prison inmates Men INT, Prison inmates Women INT, Prison inmates Total INT, Incarceration rate Male INT, Incarceration rate Female INT, Incarceration rate Total INT, Country comparison VARCHAR) CREATE TABLE conference_national (conference_national_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Opponent VARCHAR, Venue VARCHAR, Result VARCHAR, Attendance (Away) INT) CREATE TABLE commanders-in-chief___commanders (commanders-in-chief___commanders_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Branch VARCHAR, Term began VARCHAR, Term ended VARCHAR, Time in office VARCHAR) CREATE TABLE past_board_members (past_board_members_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Chairman VARCHAR, Artistic Director VARCHAR, Performance Liaison VARCHAR, Secretary VARCHAR, Business manager VARCHAR, Production Stagemanager VARCHAR, Dramaturge VARCHAR, Public Relations VARCHAR, First/Second Year Rep. VARCHAR, Male Rep. VARCHAR) CREATE TABLE stockholm_derbies (stockholm_derbies_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Venue VARCHAR, Opponents VARCHAR, Score VARCHAR, Attendance VARCHAR)  
SELECT Attendance FROM stockholm_derbies WHERE Venue = stadion AND Score = 2-0